[PATCH v6 04/11] selftests: tracing: Add syntax testcase for wprobe

["Masami Hiramatsu (Google)" <mhiramat@kernel.org>]

From: Masami Hiramatsu (Google) <mhiramat@kernel.org>

Add "wprobe_syntax_errors.tc" testcase for testing syntax errors
of the watch probe events.

Link: https://lore.kernel.org/all/175859027842.374439.6402700780945714048.stgit@devnote2/

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
---
 .../test.d/dynevent/wprobes_syntax_errors.tc       |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 tools/testing/selftests/ftrace/test.d/dynevent/wprobes_syntax_errors.tc

diff --git a/tools/testing/selftests/ftrace/test.d/dynevent/wprobes_syntax_errors.tc b/tools/testing/selftests/ftrace/test.d/dynevent/wprobes_syntax_errors.tc
new file mode 100644
index 000000000000..56ac579d60ae
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/dynevent/wprobes_syntax_errors.tc
@@ -0,0 +1,20 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: Watch probe event parser error log check
+# requires: dynamic_events "w[:[<group>/][<event>]] [r|w|rw]@<addr>[:<len>]":README
+
+check_error() { # command-with-error-pos-by-^
+    ftrace_errlog_check 'wprobe' "$1" 'dynamic_events'
+}
+
+check_error 'w ^symbol'			# BAD_ACCESS_FMT
+check_error 'w ^a@symbol'		# BAD_ACCESS_TYPE
+check_error 'w w@^symbol'		# BAD_ACCESS_ADDR
+check_error 'w w@jiffies^+offset'	# BAD_ACCESS_ADDR
+check_error 'w w@jiffies:^100'		# BAD_ACCESS_LEN
+check_error 'w w@jiffies ^$arg1'	# BAD_VAR
+check_error 'w w@jiffies ^$retval'	# BAD_VAR
+check_error 'w w@jiffies ^$stack'	# BAD_VAR
+check_error 'w w@jiffies ^%ax'		# BAD_VAR
+
+exit 0